1-4
: 1s+2s dance RH across.
5-8
: 1s cast to 2nd place & 2s dance up to 1st place. On bars 7&8 1s pass LSh
  to finish back to back in the centre, 1L facing up & 1M facing down
9-12
: 1s dance 1/2 LSh reel of 3 across (1L with 2s & 1M with 3s) giving LSh
  to 1st corners to begin & finish 1L between 2s facing down & 1M
  between 3s facing up
13-16
: All set & cross RH
17-24
: 1s cast to right round 2nd corners & turn RH to 2nd place opposite
  sides. (3) (1) (2)
25-32
: All Set+Link for 3 couples twice.  2 1 3 4